Increasing the Surface Activity of 2D Ultrathin Co<sub>3</sub>O<sub>4</sub> by Indium Doping for TEA Sensing

Optimizing and improving the surface activity of Co<sub>3</sub>O<sub>4</sub> sensing materials are crucial for applications in triethylamine detection. Herein, indium-doped Co<sub>3</sub>O<sub>4</sub> hollow microflowers (InCo HMfs), assembled from ultrathin nanosheets, were prepared via a hydrolysis reaction. Three distinct crystal facets─{1 1 0}, {1 1 1}, and {0 0 1}─were observed in 2-InCo HMfs. Results from TEM, XPS, and XAS characterization show that the increase of Co<sup>2+</sup> content induced by indium doping promotes the formation of highly active crystal planes in Co<sub>3</sub>O<sub>4</sub>. DFT calculations revealed the reasons for the improvement in the gas sensing performance of 2-InCo HMfs and the multiple effects of In ions. Our dual strategy of doping with indium and hydrolysis markedly improved the intrinsic TEA sensing performance of Co<sub>3</sub>O<sub>4</sub>, offering a novel avenue for designing high-performance TEA sensors.

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Publication Details

Journal
ACS Sensors
Published
2025-05-22
DOI
https://doi.org/10.1021/acssensors.5c00238
Citations
4
Primary Topic
Gas Sensing Nanomaterials and Sensors
Type
article
Field-Weighted Citation Impact
2.92

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article

Increasing the Surface Activity of 2D Ultrathin Co3O4 by Indium Doping for TEA Sensing

Hong Zhou, Fengmin Liu, Tianrun Zheng, Yilin Wang et al.
4 citations
ACS Sensors
Gas Sensing Nanomaterials and Sensors
2.92
article

Increasing the Surface Activity of 2D Ultrathin Co3O4 by Indium Doping for TEA Sensing

Hong Zhou, Fengmin Liu, Tianrun Zheng, Yilin Wang, Yueying Liu, Kang Yang, Geyu Lu, Yi Lu, Mingxue Zhang
article en
4 citations

Abstract

Optimizing and improving the surface activity of Co<sub>3</sub>O<sub>4</sub> sensing materials are crucial for applications in triethylamine detection. Herein, indium-doped Co<sub>3</sub>O<sub>4</sub> hollow microflowers (InCo HMfs), assembled from ultrathin nanosheets, were prepared via a hydrolysis reaction. Three distinct crystal facets─{1 1 0}, {1 1 1}, and {0 0 1}─were observed in 2-InCo HMfs. Results from TEM, XPS, and XAS characterization show that the increase of Co<sup>2+</sup> content induced by indium doping promotes the formation of highly active crystal planes in Co<sub>3</sub>O<sub>4</sub>. DFT calculations revealed the reasons for the improvement in the gas sensing performance of 2-InCo HMfs and the multiple effects of In ions. Our dual strategy of doping with indium and hydrolysis markedly improved the intrinsic TEA sensing performance of Co<sub>3</sub>O<sub>4</sub>, offering a novel avenue for designing high-performance TEA sensors.

ACS SensorsVol. 10(6)
Jilin University (CN), State Key Laboratory on Integrated Optoelectronics (CN), Jilin Medical University (CN)
Natural Science Foundation of Jilin Province, National Natural Science Foundation of China, Jilin University, National Key Research and Development Program of China
Openalex Percentile: Top 9%
Gas Sensing Nanomaterials and Sensors
2.92
DOISourceOpenAlex
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Increasing the Surface Activity of 2D Ultrathin Co<sub>3</sub>O<sub>4</sub> by Indium Doping for TEA Sensing — Hong Zhou, Fengmin Liu, et al. · ACS Sensors (2025) | TGRS Research Map | TGRS